Bridge Type
Main Span(s): Prestressed concrete [5] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]
Bridge Dimensions
Length: 9.4 m = 30.8 ft
Main Spans: 1 at 7.9 m = 25.9 ft
Approach Spans: 0
Skew: 28
Width, Roadway: 10 m = 32.8 ft (2 Lanes) and Out-To-Out: 12.3 m = 40.4 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Middleport [46998]: Niagara County [063], New York [36]
Owned by State Highway Agency [01], DOT District: 54
0.1 MI N JCT RTS 31 & 31E
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 86.2 metric ton = 94.8 tons (Allowable Stress(AS) [2])
Inventory: 38.1 metric ton = 41.9 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Somewhat better than minimum adequacy to tolerate being left in place as is [5] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: June 1999 [699] and Frequency: 24
Future Work
Work Needed: Widening of existing bridge with deck rehabilitation or replacement. [34]
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 2916 (2016) and Trucks: 5%
Future ADT: 3607 (In 2039
)